APA
Hebblethwaite P., . (1978). The year of three Popes. London: Collins.
Chicago
Hebblethwaite Peter, . 1978. The year of three Popes. London: Collins.
Harvard
Hebblethwaite P., . (1978). The year of three Popes. London: Collins.
MLA
Hebblethwaite Peter, . The year of three Popes. London: Collins. 1978.
